Home / 112,849.28-155,661.44-72,615.44

Finding the Fourth Proportional to 112,849.28, 155,661.44 and 72,615.44

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Solution

The fourth proportional to 112,849.28, 155,661.44 and 72,615.44 is: 100,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,849.28 : 155,661.44 = 72,615.44 : x
  2. Step 2: Convert to fraction form
    112,849.28/155,661.44 = 72,615.44/x
  3. Step 3: Cross multiply
    112,849.28x = 155,661.44 × 72,615.44
  4. Step 4: Simplify right side
    112,849.28x = 11,303,423,956.63
  5. Step 5: Solve for x
    x = 11,303,423,956.63/112,849.28
  6. Step 6: Final answer
    x = 100,163.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.